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. Author manuscript; available in PMC: 2015 Mar 17.
Published in final edited form as: Angew Chem Int Ed Engl. 2014 Mar 17;53(12):3201–3204. doi: 10.1002/anie.201309629

Figure 4.

Figure 4

Tracking analysis of three gold rods in a HeLa cell aggregate. a) the trajectory of three motors (motor #1, 2 and 3) among HeLa cells (represented as spheres). Arrows indicate the directions of motors, and stars indicate where the attachment of acoustic motors occurs, with numbering corresponding to each motor. b) the speeds of three motors (from top to bottom: motor #1, 2 and 3). Gaps (double arrows) indicate an attachment event that corresponds to a). The coordinates of each motor were tracked frame by frame at 30 frames per second (fps).